Stock rest for lathes and like machines



Ago 26p J. P. BROPHY STOCK REST FOR LA THES ND LIKE MACHINES Filed Jun@ 5, 1922 INVENToR.

Patented Aug. 2e, 1924.

lPATENT o Fysica.

JOHN P. BROPHY, or CLEVELAND EIGHTS, omo.

sToox nns'r ron'm'rnns AND Lrxn nncnnms.

Applicationvled June 5,

To" allwlwm t may concern.'

Be it known that I, JoHN P. BnoPHY. a citizen of the United States, and a resident of Cleveland Heights, county of Cuyahoga, and State of/Ohio, have invented a new and useful Improvement in Stock Rests for Lathes and like Machines, of which' the following is a specification, the rinciple of the invention being herein explamed, and the best mode in which I have contemplated ap lying that principle, so as to distinguish it rom other` inventions.

The present improvements relating, as indicated, to stock rests have more particular re ard to rests for supporting bars f o r rods t at are beingv fed'into automatic screw machines, lathes, either. single or multiple spindle, and like machines. It is well known that the feeding of the stock to machines of the class in question is an extremely noisy operation, particularly where a plurality'of spindles are carried in a rotatable indexing head, although the rotation of the individual rods'incidentahy to certain operations performed thereon in the machines creates a great amount of clatter with the result thata shop equipped'wit 4such machines is extremely noisy.

. The object'of the presentinvention, accordingly, is the provision of a stockrest forv use in.. the connection stated whereby most of the noisewill be eliminated without in any way interferring with'the forward fee ing movement of the `individual pieces or the rotation f thereof. either individually or altogether as where an indexing stock-spindle head is employed. To the ac. complishment of the foregoing and related ends, the invention, then, consists of the means hereinafter fullyfdescribed and particularly pointed out in the claims, the nnexed\ drawing andthe following description setting forth in detail certain mechanism embodying the invention, such disclosed means constituting,"however,'but one 'of various mechanical forms in which/ the principleof the invention may be used;

` In said annexed drawing Fig. 1 is a side elevation of my improved stock rest as designed for a multiple spindle v1922. Serial N0. 566,014.

machine in which the pieces of s tock require to be rotatable as a body as well as individually; Fig. 2 is an e'nd elevation of such stock rest, as-viewed from the left in Fig. l; Figs. 3 and .4 are, respectively, a central longitudinal section of said rest andv a transverse section thereof, tlie plane of the latter being indicated by the line 4 4, Fig. 1; Fig.' 5 is a sectional view similar to that of `Fig. 3, butillustrating a modi-Y iication in construction; and Fig. 6 is an- \other sectional view similar-to that of Fig.

3, but illustrating -a construction adapted for a single spindle machine.

A pluralityof stands 1, preferably two in number, as shown in Fig. 1, will be employed to support my improved noiseless or mufHed stock rest, such stands being aligned ',with the axis of the automatic screw machine, lathe, or like machine, of which the rear end of the head 2. only is shown (see Fig. 1)-. In such head, as lwill be understood, are mounted suitable spindles (not shown) carrying the stock feed tubes 3 and the usual chucks or equivalent -stock grippin means (also not shown), which are individually rotatableabout their respective axes, in order to turn the stock against a fixed tool. Tubes 3 are vreciprocable in a longitudinal direction in order to feed the stock forward from time to time the same -being of well known construction in metal working machines.

The central element of the stock. rest, where a plurality' of guides require to be provided for ,a corresponding number f of bars or' rods a, is 'a tubular shaft 5 of a ,length suilicient vto span the distance between the stands' 1; and the end of said shaft adjacent the machine head 2 is operatively connected with the latter through an extension 6 ixedly attached to` a central point on said head, .the connection withY the shaft being preferably on the order of aiiex-l ibleor universal cou ling 7." In order to 95 insure the accurate' a 'gmnent of the rods or bars 'a 'with thev stock vfeed tubes 3, a disk 8, provided-'with properly spaced o n- Vings 9, is slidably mounted `on said aft extension', being held in desired longi- 100 asy ' when retracted in their stock feeding movev vided at their respective ends tudinal position thereon by means of a set screw 10. Normally when the stock rest is in use, saidl disk will be located, as shown in full ylines in Fig. 1, as far forward as possible and yet not interfere with the tubes ment. However, when it is4 desired to entirely remove said tubes, as' 1n setting the -machine for'operation on a different gauge of stock, the disk mayv be moved back to the position "indicated in dotted outline. As shown in Fig. 3, the openings 9 are larger in diameter than the bars or rods a and are provided with bushings 11 of leather, fiber or composition that more closely lit such stock and at the same time vprevent any metal-to-metal contact with such disk.

The stock ides in the main body of the rest are. pre erably divided longitudinally into two sections, where the distance between the stands '1, 1, is considerable, although it will be understood thata single such section of necessary vlength may be substituted. These guides consist of metal tubes 12 held at their ends in disks 13 similar to disk 8,

the apertures 14 in'which such tubes arel thus fitted corresponding of course in location with apertures 9 in such last -men tioned disk. Tubes 12 are furthermore prowith interior bushings l5 of the, same character as'l the bushings 11 in said disk 8. The disks 13 at the respective ends of the stock rest serve to .support the latter by slidably resting on transversely spaced flanged rollers y16 mounted on the upper ends of the corresponding stands 1, as best shown in Figs. 2 and 4:.

Said stock rest is accordingly rotatable as av whole with a minimum of frictional re-Y sistance whenever'the index movement of the machine head 2 is imparted to said rest through theconnecting shaft extension 6.

Between each pair of disks 13, marking the respective ends of the sections of the stock rest, the guide tubes 12 are enclosed by a cylindrical casing 16, preferably of sheet 1ron, and the space within such .casing or shell not occupied by the tubes or the ce'n tral shaft 5 is filled with a sound-proof or vsoundinsulating packing 17. Any of the usual materials, such as mineral wool-for example, employed in sound-proofing floors and walls may be usedfor such packing and as a result'the noisel which would otherwise be produced uponrotation of the rods or bars inthe guide tubes, and upon rotation of the rest as a whole during index` movement of the machine-head2, 1s so deadened or ,muiiied as to render the operations in question comparatively noiseless. The bushings 11 and 15 assist,'of course, in deadening such noise not onlylb also b tending to keep the bars or4 rods from irect contact with the inner walls of the guide tubes 12.

In place of -a disk 8 longitudinally adjust-l v vided with bushings 21, similar to bushings- 11 and 15 p-reviously described, and may be extended, as shown in the upper portion of,

Fig. 5, so that their forward ends correspond in position with the position of-disk 8 shown in full lines in Fig. 1, or said tubes may be pushed back,as shown in the lower portion of Fig. 5, when it is necessary to provide, clearance for the-.withdrawal 'of the stock feed tubes 3 of the machine.

As shown in Fig. 6, my sound-proof construction may be just as readily' adapted for use in feeding a single bar as for a plurality thereof.v In such case,however, .the stock rest will not require to be `rotatably supported on the stands 25, but ,the guide tube 26 will be directly mounted in the upper ends of such stands.- As in the previously described construction, however, said tube is enclosedv by a casing 27 between which and the tube I place a sound-proof packing 28. A telescopingv extension 29, similar to the one just describedf as being shown in Fig. 5, is employed at ,the forward end of the rest to support the stock intermediately ofthe latter and the machine.

Other modes of applying the principle of my `invention may be employed instead of the one explained,`change being made as regards .the mechanism herein disclosed, provided the means stated by any of the stated means be employed. n

I therefore particularly point out -and distinctly claim' as my invention l. In mechanism of the character described, the combination of suitable supports, a guide tube for an individual bar or rod,'ay shell surroundin ,said tube and following claims or the equivalent of such spaced therefrom, and soun -deadening material packed between said tube and shell.

2. In mechanism of the character described, the combination of suitable supports, .a guide tube for anindividual bar or rod, a shell surrounding saidtube and spaced therefrom, sound-deadening material packed between said'tube and shell, and bushlngs of, similar material interiorly fit-v ted in theendsof said tube.

3. In mechanism of the character dereason of the character of) scribed, .the combination of suitable supthe material `w ereof they are made, but

ports, aguide tube for an individual bar or -rod, a shell surrounding I said tube and 1li surrounding said tubes, and sound-deadenin *for bar or rod stock exten i sai material packedl between said tubes an Y" L wherein the stock may be supportedbetween Y shell.

5. In mechanism ofthe character described, the combination of two spaced supports, a diskV rotatably mounted on each of said supports, a plurality of guiden tubes for bar or rod stock extendin at their respective ends through said dis Aa shell attached at its respective ends vto said disks and surroundingI said tubes, sound-deadening material packed between said tubes and shell, and meansforf f'on'eof said disks with a rotatable machine head, whereby the rest-structure inclusive ofthe foregoing elements maybe indexed in unison withsuch head. J

6. In mechanism of the 'character described, the combination of two spaced' supports, a 4disk rotatably -mo'un'ted'on each of said supports, a: plurality of guide tubes for baror rod stock extending'at Vits res ecF tive ends through said disks, a shell attac ed at its respective ends to said disks and surroundin said tubes, sounddeadenjn material pac ed between said tubes an shell, means for connecting one of said disks with a rotatable machine head, whereby the reststructure inclusive of theffore may be indexed in -unison wlth such head, and longitudinally adjustable means for supporting the stockbetween such 'last mentioned disk and such head.

7.111 mechanism of .the characterl de# scribed, the combination of'two spaced sup* ports, a disk rotatably mounted on each of Y said supports, a plurality of'guide tubes .at their respective ends through Vsaid tached at its respective ends to-said-disks and surrounding s'aid tbes, sound-deadening material packed between said tubes and shell, a shaft axially aligned with one "of said disks for connecting -same with a rotatable machjnehead, whereby the rest-structure inclusive 'ofthe foregoing elements may be indexed lin vunison wit such head a universal joint connecting vsaid shaft with d disk. ,I

8. In mechanism of the character described, the combination of two spaced suping'elements `a'shell atports, a disk rotatably mounted o'neach ot vsaid supports, a plurality of guide tubes for bar or -rod stock extendin atftheir respective ends through said. isks, fa shell attached at its respective ends to said disks and surroundin said tubes, sound-deadening material pac ed between said tubes and shell, a shaft axially aligned with .one of said disks for connecting same witha rotatable machine head, whereby .the reststructure inclusive of the 'fore ing elements may be indexed in unison with such head, a universal joint connecting said shaft with said disk, and a disk longitudinally adjustable along said shaft and formed wlth openings alinged vwith the aforesaid guide tubes said disk andmachine head.

9. In mechanism of the character de-I tube, a shell .surroundingJ said tube and.

spaced therefrom, sounddeadening material packed betweenN the innerwall of said shell and/'said tube, and 'a' second'tube telescopically engaged in one end of said first named tube. l1. In mechanism,of the character de scribed, the combina ion 'of a stock guide icc tube, a shell surrounding said tube Aand spaced therefrom, a packing of sound-deadening material between. said shell and said tube, a second tube slidably' engaged in one endA oi said stock guide tube, .anda bushingo'f .sound-deadening material interiorly fitted into the outer end or said second tube.

12. In mechanism of the 'characterdescribed, the combination o sitab'ly spaced supporting members, a shel drotatably carried by said members, a stock -gulde tube carried interiorly of said shell, and sounddeadening material surrounding said tube and spacing it from the inner wall of said shell. Y Y

13. In mechanism of the scribed, Lthecombination of a metallic'stock guide tube and a layer of sound-deadem'ng material. surrounding said tube. Y A

14.'.In mechanism of the character de scribed, the combination out` astockv guide tube, a layer of sound-deadening materai land rotatin 'means, of astockrestmoun in longitudinal alignment with said means, A30

fio

forsupporting stock exteriorly 'o 125 ya plurality of stock carrying tubes within said cylinder, and. soundldeadening materia-1 within said cylinder between'the inner sur-i face thereof and said tubes.

i6. In mechanism of the character 'deseribed,the combination of a hollow cylinder having closed ends7 a plurality of stock i A i guiding tubes extending longitudinally of said cylinder and Fprojeetin ends thereof, and sound-insu ating material Within said cylinder between the innerrsurface thereof and said tubes.

Signed by me this 31 day 'of May, 1922 JoHN'P. BRoPHY,v

through the'` 10 

